two classes after each othe mean css code example
Example 1: css multiple classes
//HTML Code
<div class = 'firstClass secondClass'></div>
//CSS Code
.firstClass.secondClass {
}
Example 2: select two stuffes css
#load p,
#load h1,
#load h2,
#load h3,
#load h4,
#load h5,
#load h6 {
font-size: 80%;
margin:2%;
}